We moved the scriptfile into the scripts directory and out of the
windmill/bin because it was causing problems.
This means that you need to rerun python setup.py develop in order to
get a new script built by setuptools that links to the moved file.
Sorry for the inconvenience.
Unless you are developing on windmill yourself, now would be a good
time to move to the pre-built packages from PyPI rather than using
the trunk.
-Mikeal